As concerns rise about the use of electronic cigarettes and the lack of data on their long-term health effects, the U.

The gap

Consensus across the literature

Supporting evidence — 3 representative gaps

• Evaluating nicotine dependence levels in e-cigarette users (2017) · doi

  Despite the fact that electronic cigarettes (e-cigarettes) are rapidly growing in popularity and use worldwide, there is scarce scientific data on abuse liability among e-cigarette users, and about whether e-cigarette use is related to nicotine dependence or not.

  Keywords: cigarettes cigarette despite fact electronic rapidly growing popularity worldwide there scarce scientific abuse liability among
• Real-Time Measurement of Electronic Cigarette Aerosol Size Distribution and Metals Content Analysis (2016) · doi

  E-cigarettes are perceived as a healthier alternative to combustible tobacco products, but their health risk factors have not yet been established, and one of them is lack of data on aerosol size generated by e-cigarettes.

  Keywords: cigarettes perceived healthier alternative combustible tobacco products health risk factors established them lack aerosol size
• Proposal would allow FDA to regulate e-cigarettes: Agency also proposes regulating cigars, hookahs, dissolvables (2014)

  As concerns rise about the use of electronic cigarettes and the lack of data on their long-term health effects, the U.

  Keywords: concerns rise electronic cigarettes lack long term health effects